초록 ▼

A method and apparatus for diagnosing a vibration in a rotor of the rotary machine including detecting the number of rotations and the vibration in the rotor when the rotor is rotating, extracting a vibration component synchronized with the number of rotations, determining whether the vibration comp

A method and apparatus for diagnosing a vibration in a rotor of the rotary machine including detecting the number of rotations and the vibration in the rotor when the rotor is rotating, extracting a vibration component synchronized with the number of rotations, determining whether the vibration component is normal or abnormal, calculating an abnormal vibration component through a vector operation by using the detected vibration component and a previously determined rotor vibration component in a normal state of the rotor, when the detected vibration component is judged to be abnormal, normalizing a vibration pattern of the abnormal vibration component, and determining an unbalance originating position in the rotor, which generates the abnormal vibration, by using a comparison of the normalized abnormal vibration pattern with a normalized vibration pattern of a previously determined unbalanced vibration.

대표청구항 ▼

An apparatus for diagnosing a vibration in a rotor of a rotary machine comprising: means for sensing the number of rotations of the rotor and providing an output indicative thereof; vibration detecting means for detecting vibration at a plurality of measuring points disposed at intervals along a dir

An apparatus for diagnosing a vibration in a rotor of a rotary machine comprising: means for sensing the number of rotations of the rotor and providing an output indicative thereof; vibration detecting means for detecting vibration at a plurality of measuring points disposed at intervals along a direction of the rotor shaft when the rotor is rotating and providing outputs representative thereof; vibration analyzer means responsive to the outputs of the vibration detector means and the rotation sensor means for extracting vibration components synchronized with the number of rotations of the rotor at the plurality of measuring points; comparing means for comparing the extracted vibration components with reference values therefor corresponding to normal vibration of the rotor for determining that the detected vibration is abnormal when at least one of the extracted vibration components exceeds the corresponding one of the reference values therefor and that the detected vibration is normal when all of the extracted vibration components do not exceed the corresponding reference value therefor, the comparing means providing an output of the extracted vibration components when the detected vibration is abnormal; calculating means for calculating abnormal vibration components in accordance with the output of the extracted vibration components and predetermined values representative of respective rotor vibration components in a normal state of the rotor and providing an output of abnormal vibration components; and pattern comparing means for comparing a pattern of amplitude values of the abnormal vibration components with patterns of previously determined vibration amplitude values at the respective measuring points when an unbalance is provided at different positions of the rotor for determining an unbalance originating position in the rotor according to a selected one of the predetermined unbalanced vibration patterns which is the most similar to the abnormal vibration pattern.